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Anonymous Transactions with Revocation and Auditing in Hyperledger Fabric [article]

Dmytro Bogatov, Angelo De Caro, Kaoutar Elkhiyaoui, Björn Tackmann
2019 IACR Cryptology ePrint Archive  
In this paper we improve the Camenisch et al. scheme and extend it with revocation and auditability; two functionalities that are necessary for real-world adoption.  ...  We present a complete protocol and provide its production-grade open-source implementation including the scheme and the proposed extensions, ready to be integrated with Hyperledger Fabric.  ...  ACKNOWLEDGMENT This work has been supported in part by the European Union's Horizon 2020 research and innovation programme under grant agreement No. 780477 PRIViLEDGE.  ... 
dblp:journals/iacr/BogatovCET19 fatcat:ovru6e4ygbhfvlqmfsvr3zq2tq

A Privacy-Preserving Healthcare Framework Using Hyperledger Fabric [article]

Charalampos Stamatellis, Pavlos Papadopoulos, Nikolaos Pitropakis, Sokratis Katsikas, William J Buchanan
2020 Sensors   pre-print
The proposed solution is able to store patient records effectively whilst providing anonymity and unlinkability.  ...  However, healthcare-oriented blockchain solutions can provide a decentralized, anonymous and secure EHR handling approach.  ...  Discussion An empirical comparison of PREHEALTH to the state-of-art procedures of the Hyperledger Fabric framework, which were utilized in order to achieve explicit anonymity and privacy of transactions  ... 
doi:10.3390/s20226587 pmid:33218022 pmcid:PMC7698751 arXiv:2011.09260v1 fatcat:ye2yu35fhvbkbatbvnavp777xy

Protego: A Credential Scheme for Permissioned Blockchains (Extended Version) [article]

Aisling Connolly, Jerome Deschamps, Pascal Lafourcade, Octavio Perez-Kempner
2022 IACR Cryptology ePrint Archive  
The current Idemix implementation in Hyperledger Fabric (v2.4) only supports a fixed set of attributes, it does not support revocation features, nor does it support anonymous endorsement of transactions  ...  Recent works to improve privacy and auditability in permissioned blockchains like Hyperledger Fabric rely on Idemix, the only anonymous credential system that has been integrated to date.  ...  The most developed permissioned platform is Hyperledger Fabric (or simply Fabric).  ... 
dblp:journals/iacr/ConnollyDLP22 fatcat:y55jb46iibhfnoxb2qkkqejysi

A Blockchain-Based Efficient, Secure and Anonymous Conditional Privacy-Preserving and Authentication Scheme for the Internet of Vehicles

Kashif Naseer Qureshi, Luqman Shahzad, Abdelzahir Abdelmaboud, Taiseer Abdalla Elfadil Eisa, Bandar Alamri, Ibrahim Tariq Javed, Arafat Al-Dhaqm, Noel Crespi
2022 Applied Sciences  
To ensure anonymity, traceability, and unlinkability of data sharing among vehicles, we utilize Hyperledger Fabric to establish the blockchain.  ...  This study also proposes a reputation-based voting system for Hyperledger Fabric to ensure a secure and reliable leader selection process in its consensus algorithm.  ...  In this paper, block validation is performed by proof of work and roadside units function as miners performing POW for the consensus mechanism.  ... 
doi:10.3390/app12010476 fatcat:7hd2m4vtorgcpbajz2spgbklxa

A Blockchain Assisted Vehicular Pseudonym Issuance and Management System for Conditional Privacy Enhancement

Donpiti Chulerttiyawong, Abbas Jamalipour
2021 IEEE Access  
as the traffic simulator and OMNeT++ as the network simulator), and the Hyperledger Fabric platform as the permissioned consortium blockchain system.  ...  In this paper, we propose the use of a permissioned consortium blockchain system with smart contract feature to facilitate secure and conditional privacy-preserving vehicular pseudonym issuance and management  ...  FIGURE 3 . 3 Hyperledger fabric blocks linkages. FIGURE 4 . 4 Pseudonyms revocation and removal of expired entries.  ... 
doi:10.1109/access.2021.3112013 fatcat:qbmpjmxdknfnhho7th7buaeaya

A Blockchain-Based Secret-Data Sharing Framework for Personal Health Records in Emergency Condition

Ahmed Raza Rajput, Qianmu Li, Milad Taleby Ahvanooey
2021 Healthcare  
These policies involve identifying extensible access control, auditing, and tamper resistance in an emergency scenario.  ...  Blockchain technology is the most trusted all-in-one cryptosystem that provides a framework for securing transactions over networks due to its irreversibility and immutability characteristics.  ...  We used a Hyperledger Composer and Fabric for securing the data privacy and auditing trial in emergency access for PHR.  ... 
doi:10.3390/healthcare9020206 pmid:33672991 pmcid:PMC7917907 fatcat:47gmo5y3ejezbbsdjazgynf424

Blockchain-based federated identity and auditing

Syed Mir, Miriam A.M. Capretz, Katarina Grolinger, Hany F. ElYamany, Mahmoud M. ElGayyar
2020 International Journal of Blockchains and Cryptocurrencies  
The proposed framework has been evaluated using two blockchain technologies (Ethereum and Hyperledger Fabric) to measure its performance in public and permissioned blockchain environments.  ...  All transactions are fully audited in the blockchain, meaning that participating parties can monitor access to their service and users can trace the use of their identities.  ...  This work presented a prototype with two blockchain technologies, Ethereum and Hyperledger Fabric, and performed evaluations with a small number of users.  ... 
doi:10.1504/ijbc.2020.10031109 fatcat:3mljex7zczcaxiuxyakheztl6e

Consentio: Managing Consent to Data Access using Permissioned Blockchains [article]

Rishav Raj Agarwal, Dhruv Kumar, Lukasz Golab, Srinivasan Keshav
2020 arXiv   pre-print
We present Consentio, a scalable consent management system based on the Hyperledger Fabric permissioned blockchain.  ...  The increasing amount of personal data is raising serious issues in the context of privacy, security, and data ownership.  ...  . • The CMS cannot collude with data consumers to ignore the roles assigned by watchdogs. All role assignments and revocations will be on the blockchain and may be audited.  ... 
arXiv:1910.07110v2 fatcat:izf6fkgpi5cldiikj5w3ec46we

Data trust framework using blockchain technology and adaptive transaction validation

Sara Rouhani, Ralph Deters
2021 IEEE Access  
Hyperledger Fabric [34] is a well-known permissioned blockchain with a modular structure, enabling pluggability and customization.  ...  IDENTITY MANAGEMENT In Hyperledger Fabric as a permissioned blockchain, a digital identity encapsulated in an X.509 digital certificate must be issued for every actor and user before interacting with the  ... 
doi:10.1109/access.2021.3091327 fatcat:4fo2mj5r3raqrjdnfjmpflpbqe

An Industrial IoT-Based Blockchain-Enabled Secure Searchable Encryption Approach for Healthcare Systems Using Neural Network

Aitizaz Ali, Mohammed Amin Almaiah, Fahima Hajjej, Muhammad Fermi Pasha, Ong Huey Fang, Rahim Khan, Jason Teo, Muhammad Zakarya
2022 Sensors  
We performed our simulations based on the blockchain-based tool Hyperledger Fabric and OrigionLab for analysis and evaluation.  ...  Additionally, the proposed approach provides a secure key revocation mechanism and updates various policies accordingly.  ...  • We achieve optimum security and anonymous keyword search in the Hyperledger Fabric framework. • Our proposed research method provides an alternative private key in case the key is lost.  ... 
doi:10.3390/s22020572 pmid:35062530 pmcid:PMC8779424 fatcat:777pbeyeencdnc7wms53l6yxum

Design and specifications of the blockchain-based auditing mechanism v1

Santiago De Diego
2020 Zenodo  
Interfaces, which are the connection points with other components of the ecosystem are also presented in the document.  ...  This document describes the architecture, design and implementation of the component: "Blockchain-Based Threat Registry" or BBTR, in the SPHINX project.  ...  In addition, Hyperledger Fabric is more easily compatible with existing PKI (Public Key Infrastructure) and in general, a more mature technology.  ... 
doi:10.5281/zenodo.4010571 fatcat:y53ey2gs3rbhdlqyuijuscgzli

Educational Blockchain: A Secure Degree Attestation and Verification Traceability Architecture for Higher Education Commission

Abdullah Ayub Khan, Asif Ali Laghari, Aftab Ahmed Shaikh, Sami Bourouis, Amir Madany Mamlouk, Hammam Alshazly
2021 Applied Sciences  
The hyperledger fabric endorses attestation records first, and then validates (committer) the degree and maintains the secure chain of tracing between stakeholder peer nodes.  ...  It also provides robustness in terms of security and privacy of records and maintains integrity with secure preservation as compared to that of the other state-of-the-art methods.  ...  , anonymous, and programmable smart contract [28] .  ... 
doi:10.3390/app112210917 fatcat:jkleoi6lqzbf5a3ig5znrxrgte

Applying Blockchain Technology to Security-Related Aspects of Electronic Healthcare Record Infrastructure

Ryno Adlam, Bertram Haskins
2021 The African journal of information and communication  
There has been a rise in the number of data breaches related to EHRs. The infrastructure used by EHRs does not assure the privacy and security of patients' medical records.  ...  Features of blockchain platforms, such as decentralisation, immutability, auditability, and transparency, may provide a viable means of augmenting or improving services related to the security of EHRs.  ...  Although a Fabric transaction is anonymous, confidential, and private, it may be traced and linked to participants by authorised auditors.  ... 
doi:10.23962/10539/32211 fatcat:sjxvz74iqrdbxa5glpq2ktvrle

An Attribute-Based Access Control Model for Internet of Things Using Hyperledger Fabric Blockchain

Elham A. Shammar, Ammar T. Zahary, Asma A. Al-Shargabi, Michele Girolami
2022 Wireless Communications and Mobile Computing  
The Hyperledger Fabric Raft consensus mechanism has been used to verify the transaction on the proposed model because it has a demanding feature for faster and less complicated consensus in comparison  ...  To overcome such challenges, an attribute-based access control model using Hyperledger Fabric blockchain (ABAC-HLFBC) is proposed in this paper.  ...  Because of its unique characteristics, such as decentralization, immutability, anonymity, security, and auditability, blockchain has gotten a lot of attention in recent years.  ... 
doi:10.1155/2022/6926408 fatcat:mp56ir2whzgxpleel27x34k37i

Design of Anonymous Endorsement System in Hyperledger Fabric [article]

Subhra Mazumdar, Sushmita Ruj
2019 arXiv   pre-print
Lastly, we also discuss the integration of the scheme on v1.2 Hyperledger Fabric.  ...  One of the popular platforms for distributed ledger solution, Hyperledger Fabric, requires a transaction to be endorsed or approved by a group of special members known as endorsers before undergoing validation  ...  Conclusion and Future Work Our proposed "Anonymous Endorsement System" addresses the problem of biased voting by endorsers in Hyperledger Fabric.  ... 
arXiv:1811.01410v4 fatcat:iskbeoy525hctgtymuxinrsp24
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